Tuner - LG 42PA4500 Service Manual

TUNER

TUNER
TDSS-G201D
TDSS-H201F
TDSH-T101F
TDSN_B001F
TDSN_G301D
TU304
TDSN-G301D
DVB_T2
NC_1
1
RESET
2
SCL
3
SDA
4
+B1[3.3V]
5
SIF
6
+B2[1.8V]
7
CVBS
8
NC_2
9
NC_3
10
NC_4
11
+B3[3.3V]
+1.25V_TU
12
+B4[1.23V]
13
NC_5
C300
C301
14
10uF 0.1uF
6.3V 16V
GND
FNIM
FNIM 15
ERROR
16
SYNC
17
VALID
18
MCLK
19
D0
20
D1
21
D2
22
D3
23
D4
24
D5
25
D6
26
D7
27
28
SHIELD
THE SYMBOL MARK OF THIS SCHEMETIC DIAGRAM INCORPORATES
SPECIAL FEATURES IMPORTANT FOR PROTECTION FROM X-RADIATION.
FILRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS
ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR
THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC.
TUNER
Copyright © 2012 LG Electronics Inc. All rights reserved.
Only for training and service purposes
OPT1 OPT3
OPT2
X
DVB-T/C HNIM
ATSC X
HNIM
DVB-T_SCA HNIM RF_SW
SBTVD FNIM RF_SW
DVB_T2
FNIM X
Close to Tuner Pin
TU303
TDSN_B001F
DVB_T/C
SBTVD
RF_S/W_CTL
1
RESET
2
SCL
3
SDA
4
+B1[3.3V]
5
SIF
6
+B2[1.8V]
7
CVBS
8
NC_1
9
NC_2
10
NC_3
11
+B3[3.3V]
12
12
+B4[1.23V]
13
SHIELD
NC_4
14
GND
15
ERROR
16
SYNC
17
FE_TS_SYN
VALID
18
FE_TS_VAL_ERR
MCLK
19
FE_TS_CLK
D0 FE_TS_DATA[0]
20
D1 FE_TS_DATA[1]
21
D2 FE_TS_DATA[2]
22
D3 FE_TS_DATA[3]
23
D4 FE_TS_DATA[4]
24
D5 FE_TS_DATA[5]
25
D6 FE_TS_DATA[6]
26
D7 FE_TS_DATA[7]
27
28
SHIELD
G201D_NON_DEMODE
TU302-*1
TDSS-G201D
NC_1
1
RESET
2
SCL
3
SDA
4
+B1[3.3V]
5
NC_2
6
+B2[1.8V]
7
NC_3
8
IF_AGC
9
DIF[P]
10
DIF[N]
11
12
SHIELD
TU300
TU302 TU301
TDSH-T101F
TDSS-G101D TDSS-H201F
ATSC DVB_T_SCA
RF_S/W_CTL
NC NC_1
1 1 1
RESET
RESET RESET
2
2 2
SCL
SCL SCL
3 3 3
SDA
SDA SDA
4
4 4
+B1[3.3V]
+3.3V +B1[3.3V]
5
5 5
SIF
SIF NC_2
6
6 6
+B2[1.8V]
+1.8V +B2[1.8V]
7
7 7
CVBS NC_3 CVBS
8
8 8
IF_AGC
IF_AGC IF_AGC
9
9 9
DIF[P] DIF[P] DIF[P]
10
10 10
DIF[N]
DIF[N] DIF[N]
11
11 11
12
12
SHIELD
SHIELD
Close to Tuner Pin
FE_TS_DATA[0-7]
FE_TS_DATA[0]
FE_TS_DATA[1]
FE_TS_DATA[2]
FE_TS_DATA[3]
FE_TS_DATA[4]
FE_TS_DATA[5]
FE_TS_DATA[6]
FE_TS_DATA[7]
FE_TS_DATA[0-7]
FE_TS_SYN
FE_TS_VAL_ERR
FE_TS_CLK
RF_SWITCH
R310
1K
RF_SWITCH_CTL
C307
0.1uF
16V
RF_SWITCH
+3.3V_TU
+3.3V_TU
R311
R308 R309
10K
R301
2.2K 2.2K
100
TUNER_RESET
R307 TU_SCL
22
R306 22 TU_SDA
16V C304 C305
0.1uF
C302 C303 68pF 68pF
C310
50V 50V
0.1uF 10uF
16V 16V
Close to Tuner Pin
DVB_T2 0
R302
H_NIM
0 R303
IF_AGC_MAIN
DVB_T2
16V
0.1uF
C306
R320
2K
NON_A_DEMODE
NON_A_DEMODE
NON_A_DEMODE
430
430
R319
R322
C312
10pF
50V
READY
R334
C313
0
10pF
A_DEMODE
50V
READY
Close to Tuner Pin
Tuner block
BUF1_FE_TS_DATA[0-7]
BUF1_FE_TS_DATA[0]
R323
FNIM
R324 BUF1_FE_TS_DATA[1]
0 FNIM
BUF1_FE_TS_DATA[2]
R326
0 FNIM
BUF1_FE_TS_DATA[3]
R325
FNIM
0
0
R327 BUF1_FE_TS_DATA[4]
FNIM
R328 BUF1_FE_TS_DATA[5]
0 FNIM
R330
BUF1_FE_TS_DATA[6]
FNIM
0
R329 BUF1_FE_TS_DATA[7]
0
FNIM
0
R331
FNIM
BUF1_FE_TS_SYN
R333
0 FNIM
BUF1_FE_TS_VAL_ERR
R332
0 FNIM
BUF1_FE_TS_CLK
0
+2.5V_TU
+1.8V_TU
C311
0.1uF
16V
IF_P_MSTAR
IF_N_MSTAR
+5V
A_DEMODE
R316
R317
470
82
C308
A_DEMODE
TU_SIF
0.1uF
E
16V
MMBT3906(NXP)
R312
B
4.7K Q301
A_DEMODE
A_DEMODE
A_DEMODE
C
TU_CVBS
3
6
LGE Internal Use Only